Moar importantly, DESU is also a grammatical meme that used to get spammed ALL THE FUCKING TIME on the *chans by newfags, oldfags, and everyfags upon exposure to the /b/tarded brain like some kind of viral DESU Tourette's Syndrome bug before it became an old meme. After its introduction into lexicon of the Chanese people in 2006, prominent lulzologists quickly concluded that you can nevar have too much DESU and thus, everything needs moar DESU. However, in these days as, like many other old memes, Desu spam has seen less activity in comparison to its younger days as well as its prime. Now it is no longer in use, and Desu has since been replaced with newer, shittier memes like PUDDI PUDDI.

It originated with a character in Rozen Maiden who would always end her sentences with Desu the emphatic form of Desu. She often appears in image macros-Desu featuring one red eye and one green eye and a green dress. She has the habit of killing-Desu people with a watering-can. Her name in DESUDESU the anime is Suiseiseki (soo-see-seh-SEK-kee), and she's a doll or some weird anime shit. The excessive use of a polite form of greeting is ironic because out of all the Rozen Maiden characters Suiseiseki is the most impolite to Jun, the human to whom they are attached. 4chanians forgot how to spell her name, and just referred to her as Desu.

In reality, lots of characters use Desu excessively since it's shorthand for implying a character is a cutey-Desu. However, the point is moot as it didn't happen on the 4chan timeline and had not appeared in any anime 4chan was obsessing over theretoforth. Furthermore, Desu is what this capitalist globalist Web 2.0 world gets for raising yet another generation of retards and dizzying them with blinking lights and empty phrases until they are so phased out they cannot even realize their own discord let alone produce a coherent sentence DESU~.